Interactive trainers are those trainers which has got an electronic control of the resistance. The versions currently in production use ANT+ Fe-C and Bluetooth Smart communication.The resistance is controlled automatically by the my e-training app, the Real software or third parts which support the above protocols.Interactive trainers are: Drivo, Rampa, Qubo Digital Smart B+ (and all the trainers of the Real serie)Smart trainers are those which are able to send training data using ANT+ and Bluetooth Smart communication. Data can be visualized on my e-training app and on any other app or device that support those protocols of communication. This trainers don’t have an automatic control of the resistance.Are smart trainers: Kura, Turbo Muin Smart B+, Qubo Power Mag Smart B+